Immunohistologic staining of liver transplants reveals equal numbers of BM-derived and sessile KCs. Frozen tissue sections from liver transplants (B6.CD45.2 liver transplanted into B6.CD45.1 recipient) were stained for macrophages (F4/80 PE), CD45.1 Cy5 (displayed in false color blue) BM-derived cells, and CD45.2 FITC (green) liver transplant-derived cells. Equal numbers of BM-derived ‘KCs (purple-red) and sessile KCs (orange-green) were detected by confocal microscopy.